Sheilatina, Sheilatina, Julinawati Julinawati, Shara Fonna Shara Fonna, and Fathurrahmi Fathurrahmi. “Utilization of Tannin Extract from Spent Coffee Ground (SCG) As a Green Corrosion Inhibitor on Ferrous Metals in Acidic and Alkaline Media”. Journal of Pharmaceutical and Sciences 6, no. 5-si (December 28, 2023): 168–176. Accessed December 21, 2024. https://journal-jps.com/new/index.php/jps/article/view/403.